There are literally hundreds of products on the market that kill parasites, so it easy to become confused on what to use!

At the Old Reynella Veterinary Clinic we stock what we believe to be the best on the market in regards to ease of use, efficacy and cost.

We stock topical and oral products, as well as the Proheart SR12 heartworm prevention injection for dogs. Some products are administered monthly, 3 monthly or annually.

The main question we are asked is ‘What parasites do we need to protect against?’. The following are the parasites we recommend treating against. The main thing to keep in mind is that is it much easier and cheaper to prevent against parasites than to treat for them when they are an issue..


Heartworm is a worm that as it’s name suggests, affects the heart. It is transferred by mosquitos, so even indoor pets are not safe.

Heartworm Life Cycle

Heartworm is easily preventable by the use of monthly preventative products or by administering an annual injection (dogs only).

Signs and symptoms of heartworm can include lethargy, exercise intolerance, coughing, decreased appetite and an enarged abdomen. If heartworm infection is possible, our Veterinarians are able to run an inhouse blood test to detect heartworm, radiographs and ultrasound may also be used.

Prevention of heartworm is the key. Treatments are available but they are expensive and hold no guarantees of success.

Puppies should be started on a heartworm prevention program from 12 weeks of age.

Intestinal Worms

Gastrointestinal worms affect both cats and dogs, and most importantly people! Some are contracted in the environment (picked up by walking on them), others are ingested or passed on by their mother via the placenta or milk. The most common worms we treat against are the hookwork, roundworm, whipworm (dogs) and the hydatid and flea tapeworm.

Common signs of worms can include but is not limited to bloated abdomen, vomiting, diarrhoea, dehydration, appetite changes, itchy bottom or visualisation of the worms themselves around the anus or in faeces.

Kittens should be wormed every 2 weeks until 12 weeks of age, then every 3 months for life*

Puppies shoud be wormed every 2 weeks until 12 weeks of age, then once a month until 6 months of age, then 3 monthly for life*

This worming protocol is based on gastrointestinal worming product use only and can change depending on the parasite products used. Some products cover gastrointestinal worms so a seperate wormer may not be necessary.


Fleas are small, blood sucking insects that love warm, humid environments. Signs of flea infestations can include skin irritation, fur loss and irritability caused by the bites from the fleas. Fleas are small, agile critters, as such you are only likely to see them on your pet if there is a large population.

Adult fleas only make up 5% of the flea population. These are the ones that you may see on your pet. The rest of the flea population is in amongst their bedding, the carpet, flooring, etc.

As well as being very irritating to your pet, they can cause an allergic reaction known as Flea Allergy Dermatitis. This is cause by a reaction to the fleas saliva. Pets often experience severe itching, as a result they often suffer from hair loss and trauma to the skin from biting and constant scratching.

Prevention is the key when it comes to fleas. Fleas were once a more seasonal nuisance but with the changes in weather, they seem to be an all-year-round issue now. It takes a minimum of 3 months consecutive treatment to break the flea lifecycle. It is very important that ALL pets in the house are treated, whether you have sighted fleas on them or not. Oral preventatives have shown the best efficacy on the market, but as some pets are hard to tablet, there are also topical applications available.

Please be aware when it comes to flea treatment, not all work effectively. Please speak to our staff about the best products to suit your pet. Click here to see our ‘Do’s and Don’ts of Flea Treatments’.


In Adelaide, we are lucky that we do not see many cases of tick related diseases. Ticks however are a big issue in the other states of Australia. It is very important that prior to taking your pet with you on any vacations, that you make sure their parasite prevention covers ticks.
There are three types of ticks: The Brown Tick, the Bush Tick and the deadly Paralyis Tick.


The Brown Dog Tick and Bush Tick often attach themselves around the ears or between the toes. In high numbers they can cause anaemia. They can also spread disease.

The Paralysis Tick can be deadly. As the tick feeds, it injects a paralysing toxin into the bloodstream. These toxins affect the muscles, including the muscles that allow them to breathe.
Paralysis Ticks are grey and range in size from a pin head to a pea. Ticks will attach themselves to pets in the environment. They cannot fly or jump.
Symptoms include unusual bark, wobbly legs, vomiting and unusual breathing. It can take several days before symptoms appear. Treatment will depend on the level of paralysis. Immediate treatment is required.

If you find yourself travelling through an area that is known to have ticks, ensure you check your pet daily, especially their feet and ears, but they can lodge anywhere.

There are monthly oral or topical products available as well as a 3 monthly chewable suitable for the treatment of ticks. Some products may require increased doses to ensure effective prevention.

Examples of the most common parasite prevention programs that our Clients choose are:

Adult Cats: Revolution once a month spot-on plus 3 monthly tapewormer tablet

Adult Dogs: Proheart SR12 annual injection, Simparica once a month flea treatment and intestinal worming tablet every 3 months

Please speak to our staff who can work out the best parasite prevention program for your pet.

Did you know that we can order products in for you? If there is something you would like, we place multiple orders each week. As long as the supplier has it in stock, we can have it to the clinic within 24 – 48 hours.